Upper tray for a baby walker



FIG. 1 is a perspective view of an upper tray for a baby walker showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The bottom plan view is not visible during normal use and has been omitted and does not form part of the claimed design. 

CLAIM The ornamental design for an upper tray for a baby walker, as shown and described. 